From 1caf181cd04090af77fd0aff8dd4b87df7a2ed66 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 3 Jul 2025 18:06:04 -0400 Subject: usr: libc: Add POSIX getpid() and getppid() Signed-off-by: Ian Moffett --- lib/libc/include/unistd.h | 3 +++ lib/libc/src/unistd/getpid.c | 43 +++++++++++++++++++++++++++++++++++++++++++ sys/include/sys/syscall.h | 2 ++ sys/kern/kern_syscall.c | 2 ++ 4 files changed, 50 insertions(+) create mode 100644 lib/libc/src/unistd/getpid.c diff --git a/lib/libc/include/unistd.h b/lib/libc/include/unistd.h index 8c82eb8..01c4abc 100644 --- a/lib/libc/include/unistd.h +++ b/lib/libc/include/unistd.h @@ -52,6 +52,9 @@ int close(int fd); int access(const char *path, int mode); off_t lseek(int fildes, off_t offset, int whence); +pid_t getpid(void); +pid_t getppid(void); + __END_DECLS #endif /* !_UNISTD_H */ diff --git a/lib/libc/src/unistd/getpid.c b/lib/libc/src/unistd/getpid.c new file mode 100644 index 0000000..5770495 --- /dev/null +++ b/lib/libc/src/unistd/getpid.c @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include + +pid_t +getpid(void) +{ + return syscall(SYS_getpid); +} + +pid_t +getppid(void) +{ + return syscall(SYS_getppid); +} diff --git a/sys/include/sys/syscall.h b/sys/include/sys/syscall.h index 08bd989..3650e7a 100644 --- a/sys/include/sys/syscall.h +++ b/sys/include/sys/syscall.h @@ -54,6 +54,8 @@ #define SYS_lseek 13 #define SYS_sleep 14 #define SYS_inject 15 +#define SYS_getpid 16 +#define SYS_getppid 17 #if defined(_KERNEL) /* Syscall return value and arg type */ diff --git a/sys/kern/kern_syscall.c b/sys/kern/kern_syscall.c index 292fa56..739dd7f 100644 --- a/sys/kern/kern_syscall.c +++ b/sys/kern/kern_syscall.c @@ -54,6 +54,8 @@ scret_t(*g_sctab[])(struct syscall_args *) = { sys_lseek, /* SYS_lseek */ sys_sleep, /* SYS_sleep */ sys_inject, /* SYS_inject */ + sys_getpid, /* SYS_getpid */ + sys_getppid /* SYS_getppid */ }; const size_t MAX_SYSCALLS = NELEM(g_sctab); -- cgit v1.2.3